SYSTEMS AND METHODS FOR ROTATIONAL ALIGNMENT OF A DEVICE UNDER TEST
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United States of America Patent
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Issued Date -
Jul 3, 2014
app pub date -
Dec 27, 2013
filing date -
Dec 31, 2012
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
Systems and methods for rotational alignment of a device under test are disclosed herein. These systems include a chuck that includes a rotational positioning assembly that includes a lower section and an upper section that is configured to selectively rotate relative to the lower section about a rotational axis. The rotational positioning assembly further includes a first bearing that is configured to support a radial load between the upper section and the lower section and a second bearing that is configured to support a thrust load between the upper section and the lower section. The methods include providing a fluid stream to the second bearing to permit rotation of the upper section relative to the lower section, rotating the upper section relative to the lower section, and ceasing the providing the fluid stream to the second bearing to restrict rotation of the upper section relative to the lower section.
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